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by bballdude16 on June 22nd, 2006

bballdude16

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What is the difference between an HDMI cable and normal component cables?

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  • by RedJohn on January 5th, 2007

    RedJohn

    Component video, as used in televisions (YPbPr), is an analogue video format in which the image is separated into three components:
    - The brightness or luminance channel, Y, transmits the brightness of the video signal along with synchronization pulses. Connecting only the Y channel will produce a B&W video image.
    - The Pb channel carries the difference between the blue and the luminance signals (B-Y).
    - The Pr channel carries the difference between the red and the luminance signals (R-Y).

    There is also a digital component video format, which is often used on digital video tape recorders. This also splits the video signal into three components:
    - The luminance channel, Y.
    - The difference between the blue and the luminance signals (B-Y), Cb.
    - The difference between the red and the luminance signals (R-Y), Cr.

    The cables used with component video are standard coaxial cables (single conductor with shield), such as types RG-59/U or RG-6/U, and usually equipped with BNC or RCA connectors.

    HDMI (High-Definition Multimedia Interface) is a digital communications protocol that supports a single high-definition digital video channel, up to eight digital audio channels, and digital commands transmitted between HDMI devices. HDMI video is also backwards-compatible with DVI (Digital Video Interface), an older digital video communications format.

    There are several different versions of HDMI used by devices. The latest version is 1.3, which supports 48-bit colour depth (24-bit in previous versions). If two HDMI devices are connected, they will negotiate the lowest version of HDMI to use when communicating with one another. For example, if you connect an HDMI 1.3 device to an HDMI 1.1 device, they will communicate using HDMI version 1.1 or lower.

    An HDMI cable contains 19 conductors and uses proprietary HDMI connectors. There are three data channels, one clock channel, and several other signal lines in an HDMI cable.

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  • by miles97 on June 19th, 2011

    miles97

    hdmi stands for high definition multi media interface and therefore, is high definition. (and full screen) component cables are older school.... and standard def... SD..

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